package atm;

import java.util.Scanner;

/**
 * 方法版本的ATM
 */
public class ATM03 {
    public static Scanner sc = new Scanner(System.in);
    public static String [][] users = {
            {"aaaaaa","111111","1000"},
            {"bbbbbb","222222","2000"},
            {"cccccc","333333","3000"},
            {"dddddd","444444","4000"},
            {"eeeeee","555555","5000"}
    };

    public static int index;

    /**
     * 主流程方法
     */
    public static void process(){

        System.out.println("欢迎使用XXX银行");
        while(true){
            login();
            menu();
        }

    }
    /**
     * 登录
     */
    public static void login(){
        // 三次比较，如果连续失败则系统退出
        for(int i = 0;i < 3;i++){
            // 登录判断
            System.out.println("请输入账号：");
            String account = sc.next();
            System.out.println("请输入密码：");
            String pwd = sc.next();
            for(int j = 0;j < users.length;j++){
                if(users[j][0].equals(account) && users[j][1].equals(pwd)){
                    System.out.println("登录成功");
//                    isLogin = true;
                    index = j;
                    return;
                }
            }
            System.out.println("登录失败，还剩"+(2 - i)+"次");
            if(i == 2){
                System.out.println("卡已被吞");
                System.exit(0);
            }
        }
    }

    /**
     * 菜单
     */
    public static void menu(){
        while (true){
            // 如果登录成功，进入菜单页面
            System.out.println("请选择：1-存款 2-取款 3-查询 4-转账 5-切换账号 6-退出");
            int input = sc.nextInt();

            if(input == 1){
               save();
            }else if(input == 2){
                get();
            }else if(input == 3){
                search();
            }else if(input == 4){
                transfer();
            }else if(input == 5){
                // 切换账号

                break;
            }else if(input == 6){
                // 系统结束
                System.out.println("再见");
                System.exit(0);
            }else{
                System.out.println("输入有误");
            }
        }
    }

    /**
     * 存款
     */
    public static void save(){
        System.out.println("请输入存的金额：");
        double blance = sc.nextDouble();
        users[index][2] = Double.parseDouble(users[index][2]) + blance + "";
        System.out.println("存款成功");
    }

    /**
     * 取款
     */
    public static void get(){
        System.out.println("请输入取款的金额：");
        double blance = sc.nextDouble();
        if(blance > Double.parseDouble(users[index][2])){
            System.out.println("余额不足");
        }else{
            users[index][2] = Double.parseDouble(users[index][2]) - blance + "";
            System.out.println("取款成功");
        }
    }

    /**
     * 查询余额
     */
    public static void search(){
        System.out.println("您的余额为："+users[index][2]);
    }

    /**
     * 转账
     */
    public static void transfer(){
        System.out.println("请输入对方账号：");
        String otherAccount = sc.next();
        // 不能转账给自己
        if(otherAccount.equals(users[index][0])){
            System.out.println("不能转给自己");
            return;
        }
        // 判断对方账号是否存在
        boolean isExist = false;
        int otherIndex = 0;
        for(int i = 0;i < users.length;i++){
            if(users[i][0].equals(otherAccount)){
                isExist = true;
                otherIndex = i;
                break;
            }
        }
        if(!isExist){
            System.out.println("输入的对方账号错误");
            return;
        }
        System.out.println("请输入转账金额：");
        double blance = sc.nextDouble();
        // 判断余额是否足够
        if(blance > Double.parseDouble(users[index][2])){
            System.out.println("余额不足");
            return;
        }
        // 从当前账号上扣去转账的金额
        users[index][2] = Double.parseDouble(users[index][2]) - blance + "";
        // 将转账的金额加在对方账号上
        users[otherIndex][2] = Double.parseDouble(users[otherIndex][2]) + blance + "";

        System.out.println("转账成功");
    }

    /**
     * 修改密码
     */
    public static void changePwd(){

    }

    public static void main(String[] args) {
        process();
    }
}
